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NVD3Vis.js
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NVD3Vis.js
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/* eslint-disable react/sort-prop-types */
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import { kebabCase, throttle } from 'lodash';
import d3 from 'd3';
import moment from 'moment';
import nv from 'nvd3-fork';
import PropTypes from 'prop-types';
import {
CategoricalColorNamespace,
evalExpression,
getNumberFormatter,
getTimeFormatter,
isDefined,
NumberFormats,
SMART_DATE_VERBOSE_ID,
t,
} from '@superset-ui/core';
import 'nvd3-fork/build/nv.d3.css';
/* eslint-disable-next-line */
import ANNOTATION_TYPES, {
applyNativeColumns,
} from './vendor/superset/AnnotationTypes';
import isTruthy from './utils/isTruthy';
import {
cleanColorInput,
computeBarChartWidth,
computeYDomain,
computeStackedYDomain,
drawBarValues,
generateBubbleTooltipContent,
generateCompareTooltipContent,
generateRichLineTooltipContent,
generateTimePivotTooltip,
generateTooltipClassName,
generateAreaChartTooltipContent,
getMaxLabelSize,
getTimeOrNumberFormatter,
hideTooltips,
tipFactory,
tryNumify,
removeTooltip,
setAxisShowMaxMin,
stringifyTimeRange,
wrapTooltip,
} from './utils';
import {
annotationLayerType,
boxPlotValueType,
bulletDataType,
categoryAndValueXYType,
rgbObjectType,
numericXYType,
numberOrAutoType,
stringOrObjectWithLabelType,
} from './PropTypes';
const NO_DATA_RENDER_DATA = [
{ text: 'No data', dy: '-.75em', class: 'header' },
{
text: 'Adjust filters or check the Datasource.',
dy: '.75em',
class: 'body',
},
];
const smartDateVerboseFormatter = getTimeFormatter(SMART_DATE_VERBOSE_ID);
// Override the noData render function to make a prettier UX
// Code adapted from https://github.com/novus/nvd3/blob/master/src/utils.js#L653
nv.utils.noData = function noData(chart, container) {
const opt = chart.options();
const margin = opt.margin();
const height = nv.utils.availableHeight(null, container, margin);
const width = nv.utils.availableWidth(null, container, margin);
const x = margin.left + width / 2;
const y = margin.top + height / 2;
// Remove any previously created chart components
container.selectAll('g').remove();
const noDataText = container
.selectAll('.nv-noData')
.data(NO_DATA_RENDER_DATA);
noDataText
.enter()
.append('text')
.attr('class', d => `nvd3 nv-noData ${d.class}`)
.attr('dy', d => d.dy)
.style('text-anchor', 'middle');
noDataText
.attr('x', x)
.attr('y', y)
.text(d => d.text);
};
const { getColor, getScale } = CategoricalColorNamespace;
// Limit on how large axes margins can grow as the chart window is resized
const MAX_MARGIN_PAD = 30;
const MIN_HEIGHT_FOR_BRUSH = 480;
const MAX_NO_CHARACTERS_IN_LABEL = 40;
const BREAKPOINTS = {
small: 340,
};
const TIMESERIES_VIZ_TYPES = ['line', 'area', 'compare', 'bar', 'time_pivot'];
const CHART_ID_PREFIX = 'chart-id-';
const propTypes = {
data: PropTypes.oneOfType([
PropTypes.arrayOf(
PropTypes.oneOfType([
// pie
categoryAndValueXYType,
// dist-bar
PropTypes.shape({
key: PropTypes.string,
values: PropTypes.arrayOf(categoryAndValueXYType),
}),
// area, line, compare, bar
PropTypes.shape({
key: PropTypes.arrayOf(PropTypes.string),
values: PropTypes.arrayOf(numericXYType),
}),
// dual-line
PropTypes.shape({
classed: PropTypes.string,
key: PropTypes.string,
type: PropTypes.string,
values: PropTypes.arrayOf(numericXYType),
yAxis: PropTypes.number,
}),
// box-plot
PropTypes.shape({
label: PropTypes.string,
values: PropTypes.arrayOf(boxPlotValueType),
}),
// bubble
PropTypes.shape({
key: PropTypes.string,
values: PropTypes.arrayOf(PropTypes.object),
}),
]),
),
// bullet
bulletDataType,
]),
width: PropTypes.number,
height: PropTypes.number,
annotationData: PropTypes.object,
annotationLayers: PropTypes.arrayOf(annotationLayerType),
bottomMargin: numberOrAutoType,
colorScheme: PropTypes.string,
comparisonType: PropTypes.string,
contribution: PropTypes.bool,
leftMargin: numberOrAutoType,
onError: PropTypes.func,
showLegend: PropTypes.bool,
showMarkers: PropTypes.bool,
useRichTooltip: PropTypes.bool,
vizType: PropTypes.oneOf([
'area',
'bar',
'box_plot',
'bubble',
'bullet',
'compare',
'column',
'dist_bar',
'line',
'time_pivot',
'pie',
]),
xAxisFormat: PropTypes.string,
numberFormat: PropTypes.string,
xAxisLabel: PropTypes.string,
xAxisShowMinMax: PropTypes.bool,
xIsLogScale: PropTypes.bool,
xTicksLayout: PropTypes.oneOf(['auto', 'staggered', '45°']),
yAxisFormat: PropTypes.string,
yAxisBounds: PropTypes.arrayOf(PropTypes.number),
yAxisLabel: PropTypes.string,
yAxisShowMinMax: PropTypes.bool,
yIsLogScale: PropTypes.bool,
// 'dist-bar' only
orderBars: PropTypes.bool,
// 'bar' or 'dist-bar'
isBarStacked: PropTypes.bool,
showBarValue: PropTypes.bool,
// 'bar', 'dist-bar' or 'column'
reduceXTicks: PropTypes.bool,
// 'bar', 'dist-bar' or 'area'
showControls: PropTypes.bool,
// 'line' only
showBrush: PropTypes.oneOf([true, 'yes', false, 'no', 'auto']),
onBrushEnd: PropTypes.func,
// 'line-multi' or 'dual-line'
yAxis2Format: PropTypes.string,
// 'line', 'time-pivot', 'dual-line' or 'line-multi'
lineInterpolation: PropTypes.string,
// 'pie' only
isDonut: PropTypes.bool,
isPieLabelOutside: PropTypes.bool,
pieLabelType: PropTypes.oneOf([
'key',
'value',
'percent',
'key_value',
'key_percent',
'key_value_percent',
]),
showLabels: PropTypes.bool,
// 'area' only
areaStackedStyle: PropTypes.string,
// 'bubble' only
entity: PropTypes.string,
maxBubbleSize: PropTypes.number,
xField: stringOrObjectWithLabelType,
yField: stringOrObjectWithLabelType,
sizeField: stringOrObjectWithLabelType,
// time-pivot only
baseColor: rgbObjectType,
};
const NOOP = () => {};
const formatter = getNumberFormatter();
function nvd3Vis(element, props) {
const {
data,
width: maxWidth,
height: maxHeight,
annotationData,
annotationLayers = [],
areaStackedStyle,
baseColor,
bottomMargin,
colorScheme,
comparisonType,
contribution,
entity,
isBarStacked,
isDonut,
isPieLabelOutside,
leftMargin,
lineInterpolation = 'linear',
markerLabels,
markerLines,
markerLineLabels,
markers,
maxBubbleSize,
onBrushEnd = NOOP,
onError = NOOP,
orderBars,
pieLabelType,
rangeLabels,
ranges,
reduceXTicks = false,
showBarValue,
showBrush,
showControls,
showLabels,
showLegend,
showMarkers,
sizeField,
useRichTooltip,
vizType,
xAxisFormat,
numberFormat,
xAxisLabel,
xAxisShowMinMax = false,
xField,
xIsLogScale,
xTicksLayout,
yAxisFormat,
yAxisBounds,
yAxisLabel,
yAxisShowMinMax = false,
yAxis2ShowMinMax = false,
yField,
yIsLogScale,
sliceId,
} = props;
const isExplore = document.querySelector('#explorer-container') !== null;
const container = element;
container.innerHTML = '';
const activeAnnotationLayers = annotationLayers.filter(layer => layer.show);
// Search for the chart id in a parent div from the nvd3 chart
let chartContainer = container;
let chartId = null;
while (chartContainer.parentElement) {
if (chartContainer.parentElement.id.startsWith(CHART_ID_PREFIX)) {
chartId = chartContainer.parentElement.id;
break;
}
chartContainer = chartContainer.parentElement;
}
let chart;
let width = maxWidth;
let colorKey = 'key';
container.style.width = `${maxWidth}px`;
container.style.height = `${maxHeight}px`;
function isVizTypes(types) {
return types.includes(vizType);
}
const drawGraph = function drawGraph() {
const d3Element = d3.select(element);
d3Element.classed('superset-legacy-chart-nvd3', true);
d3Element.classed(`superset-legacy-chart-nvd3-${kebabCase(vizType)}`, true);
let svg = d3Element.select('svg');
if (svg.empty()) {
svg = d3Element.append('svg');
}
const height = vizType === 'bullet' ? Math.min(maxHeight, 50) : maxHeight;
const isTimeSeries = isVizTypes(TIMESERIES_VIZ_TYPES);
// Handling xAxis ticks settings
const staggerLabels = xTicksLayout === 'staggered';
const xLabelRotation =
(xTicksLayout === 'auto' && isVizTypes(['column', 'dist_bar'])) ||
xTicksLayout === '45°'
? 45
: 0;
if (xLabelRotation === 45 && isTruthy(showBrush)) {
onError(
t('You cannot use 45° tick layout along with the time range filter'),
);
return null;
}
const canShowBrush =
isTruthy(showBrush) ||
(showBrush === 'auto' &&
maxHeight >= MIN_HEIGHT_FOR_BRUSH &&
xTicksLayout !== '45°');
const numberFormatter = getNumberFormatter(numberFormat);
switch (vizType) {
case 'line':
if (canShowBrush) {
chart = nv.models.lineWithFocusChart();
if (staggerLabels) {
// Give a bit more room to focus area if X axis ticks are staggered
chart.focus.margin({ bottom: 40 });
chart.focusHeight(80);
}
chart.focus.xScale(d3.time.scale.utc());
} else {
chart = nv.models.lineChart();
}
chart.xScale(d3.time.scale.utc());
chart.interpolate(lineInterpolation);
chart.clipEdge(false);
break;
case 'time_pivot':
chart = nv.models.lineChart();
chart.xScale(d3.time.scale.utc());
chart.interpolate(lineInterpolation);
break;
case 'bar':
chart = nv.models
.multiBarChart()
.showControls(showControls)
.groupSpacing(0.1);
if (!reduceXTicks) {
width = computeBarChartWidth(data, isBarStacked, maxWidth);
}
chart.width(width);
chart.xAxis.showMaxMin(false);
chart.stacked(isBarStacked);
break;
case 'dist_bar':
chart = nv.models
.multiBarChart()
.showControls(showControls)
.reduceXTicks(reduceXTicks)
.groupSpacing(0.1); // Distance between each group of bars.
chart.xAxis.showMaxMin(false);
chart.stacked(isBarStacked);
if (orderBars) {
data.forEach(d => {
const newValues = [...d.values]; // need to copy values to avoid redux store changed.
// eslint-disable-next-line no-param-reassign
d.values = newValues.sort((a, b) =>
tryNumify(a.x) < tryNumify(b.x) ? -1 : 1,
);
});
}
if (!reduceXTicks) {
width = computeBarChartWidth(data, isBarStacked, maxWidth);
}
chart.width(width);
break;
case 'pie':
chart = nv.models.pieChart();
colorKey = 'x';
chart.valueFormat(numberFormatter);
if (isDonut) {
chart.donut(true);
}
chart.showLabels(showLabels);
chart.labelsOutside(isPieLabelOutside);
// Configure the minimum slice size for labels to show up
chart.labelThreshold(0.05);
chart.cornerRadius(true);
if (['key', 'value', 'percent'].includes(pieLabelType)) {
chart.labelType(pieLabelType);
} else if (pieLabelType === 'key_value') {
chart.labelType(d => `${d.data.x}: ${numberFormatter(d.data.y)}`);
} else {
// pieLabelType in ['key_percent', 'key_value_percent']
const total = d3.sum(data, d => d.y);
const percentFormatter = getNumberFormatter(
NumberFormats.PERCENT_2_POINT,
);
if (pieLabelType === 'key_percent') {
chart.tooltip.valueFormatter(d => percentFormatter(d));
chart.labelType(
d => `${d.data.x}: ${percentFormatter(d.data.y / total)}`,
);
} else {
// pieLabelType === 'key_value_percent'
chart.tooltip.valueFormatter(
d => `${numberFormatter(d)} (${percentFormatter(d / total)})`,
);
chart.labelType(
d =>
`${d.data.x}: ${numberFormatter(d.data.y)} (${percentFormatter(
d.data.y / total,
)})`,
);
}
}
// Pie chart does not need top margin
chart.margin({ top: 0 });
break;
case 'column':
chart = nv.models.multiBarChart().reduceXTicks(false);
break;
case 'compare':
chart = nv.models.cumulativeLineChart();
chart.xScale(d3.time.scale.utc());
chart.useInteractiveGuideline(true);
chart.xAxis.showMaxMin(false);
break;
case 'bubble':
chart = nv.models.scatterChart();
chart.showDistX(false);
chart.showDistY(false);
chart.tooltip.contentGenerator(d =>
generateBubbleTooltipContent({
point: d.point,
entity,
xField,
yField,
sizeField,
xFormatter: getTimeOrNumberFormatter(xAxisFormat),
yFormatter: getTimeOrNumberFormatter(yAxisFormat),
sizeFormatter: formatter,
}),
);
chart.pointRange([5, maxBubbleSize ** 2]);
chart.pointDomain([
0,
d3.max(data, d => d3.max(d.values, v => v.size)),
]);
break;
case 'area':
chart = nv.models.stackedAreaChart();
chart.showControls(showControls);
chart.style(areaStackedStyle);
chart.xScale(d3.time.scale.utc());
break;
case 'box_plot':
colorKey = 'label';
chart = nv.models.boxPlotChart();
chart.x(d => d.label);
chart.maxBoxWidth(75); // prevent boxes from being incredibly wide
break;
case 'bullet':
chart = nv.models.bulletChart();
data.rangeLabels = rangeLabels;
data.ranges = ranges;
data.markerLabels = markerLabels;
data.markerLines = markerLines;
data.markerLineLabels = markerLineLabels;
data.markers = markers;
break;
default:
throw new Error(`Unrecognized visualization for nvd3${vizType}`);
}
// Assuming the container has padding already other than for top margin
chart.margin({ left: 0, bottom: 0 });
if (showBarValue) {
drawBarValues(svg, data, isBarStacked, yAxisFormat);
chart.dispatch.on('stateChange.drawBarValues', () => {
drawBarValues(svg, data, isBarStacked, yAxisFormat);
});
}
if (canShowBrush && onBrushEnd !== NOOP) {
if (chart.focus) {
chart.focus.dispatch.on('brush', event => {
const timeRange = stringifyTimeRange(event.extent);
if (timeRange) {
event.brush.on('brushend', () => {
onBrushEnd(timeRange);
});
}
});
}
}
if (chart.xAxis && chart.xAxis.staggerLabels) {
chart.xAxis.staggerLabels(staggerLabels);
}
if (chart.xAxis && chart.xAxis.rotateLabels) {
chart.xAxis.rotateLabels(xLabelRotation);
}
if (chart.x2Axis && chart.x2Axis.staggerLabels) {
chart.x2Axis.staggerLabels(staggerLabels);
}
if (chart.x2Axis && chart.x2Axis.rotateLabels) {
chart.x2Axis.rotateLabels(xLabelRotation);
}
if ('showLegend' in chart && typeof showLegend !== 'undefined') {
if (width < BREAKPOINTS.small && vizType !== 'pie') {
chart.showLegend(false);
} else {
chart.showLegend(showLegend);
}
}
if (yIsLogScale) {
chart.yScale(d3.scale.log());
}
if (xIsLogScale) {
chart.xScale(d3.scale.log());
}
let xAxisFormatter;
if (isTimeSeries) {
xAxisFormatter = getTimeFormatter(xAxisFormat);
// In tooltips, always use the verbose time format
chart.interactiveLayer.tooltip.headerFormatter(smartDateVerboseFormatter);
} else {
xAxisFormatter = getTimeOrNumberFormatter(xAxisFormat);
}
if (chart.x2Axis && chart.x2Axis.tickFormat) {
chart.x2Axis.tickFormat(xAxisFormatter);
}
if (chart.xAxis && chart.xAxis.tickFormat) {
const isXAxisString = isVizTypes(['dist_bar', 'box_plot']);
if (isXAxisString) {
chart.xAxis.tickFormat(d =>
d.length > MAX_NO_CHARACTERS_IN_LABEL
? `${d.slice(0, Math.max(0, MAX_NO_CHARACTERS_IN_LABEL))}…`
: d,
);
} else {
chart.xAxis.tickFormat(xAxisFormatter);
}
}
let yAxisFormatter = getTimeOrNumberFormatter(yAxisFormat);
if (chart.yAxis && chart.yAxis.tickFormat) {
if (
(contribution || comparisonType === 'percentage') &&
(!yAxisFormat ||
yAxisFormat === NumberFormats.SMART_NUMBER ||
yAxisFormat === NumberFormats.SMART_NUMBER_SIGNED)
) {
// When computing a "Percentage" or "Contribution" selected,
// force a percentage format if no custom formatting set
yAxisFormatter = getNumberFormatter(NumberFormats.PERCENT_1_POINT);
}
chart.yAxis.tickFormat(yAxisFormatter);
}
if (chart.y2Axis && chart.y2Axis.tickFormat) {
chart.y2Axis.tickFormat(yAxisFormatter);
}
if (chart.yAxis) {
chart.yAxis.ticks(5);
}
if (chart.y2Axis) {
chart.y2Axis.ticks(5);
}
// Set showMaxMin for all axis
setAxisShowMaxMin(chart.xAxis, xAxisShowMinMax);
setAxisShowMaxMin(chart.x2Axis, xAxisShowMinMax);
setAxisShowMaxMin(chart.yAxis, yAxisShowMinMax);
setAxisShowMaxMin(chart.y2Axis, yAxis2ShowMinMax || yAxisShowMinMax);
if (vizType === 'time_pivot') {
if (baseColor) {
const { r, g, b } = baseColor;
chart.color(d => {
const alpha = d.rank > 0 ? d.perc * 0.5 : 1;
return `rgba(${r}, ${g}, ${b}, ${alpha})`;
});
}
chart.useInteractiveGuideline(true);
chart.interactiveLayer.tooltip.contentGenerator(d =>
generateTimePivotTooltip(d, xAxisFormatter, yAxisFormatter),
);
} else if (vizType !== 'bullet') {
const colorFn = getScale(colorScheme);
chart.color(
d =>
d.color ||
colorFn(cleanColorInput(d[colorKey]), sliceId, colorScheme),
);
}
if (isVizTypes(['line', 'area', 'bar', 'dist_bar']) && useRichTooltip) {
chart.useInteractiveGuideline(true);
if (vizType === 'line' || vizType === 'bar') {
chart.interactiveLayer.tooltip.contentGenerator(d =>
generateRichLineTooltipContent(
d,
smartDateVerboseFormatter,
yAxisFormatter,
),
);
} else if (vizType === 'dist_bar') {
chart.interactiveLayer.tooltip.contentGenerator(d =>
generateCompareTooltipContent(d, yAxisFormatter),
);
} else {
// area chart
chart.interactiveLayer.tooltip.contentGenerator(d =>
generateAreaChartTooltipContent(
d,
smartDateVerboseFormatter,
yAxisFormatter,
chart,
),
);
}
}
if (isVizTypes(['compare'])) {
chart.interactiveLayer.tooltip.contentGenerator(d =>
generateCompareTooltipContent(d, yAxisFormatter),
);
}
// This is needed for correct chart dimensions if a chart is rendered in a hidden container
chart.width(width);
chart.height(height);
svg
.datum(data)
.transition()
.duration(500)
.attr('height', height)
.attr('width', width)
.call(chart);
// For log scale, only show 1, 10, 100, 1000, ...
if (yIsLogScale) {
chart.yAxis.tickFormat(d =>
d !== 0 && Math.log10(d) % 1 === 0 ? yAxisFormatter(d) : '',
);
}
if (xLabelRotation > 0) {
// shift labels to the left so they look better
const xTicks = svg.select('.nv-x.nv-axis > g').selectAll('g');
xTicks.selectAll('text').attr('dx', -6.5);
}
const applyYAxisBounds = () => {
if (
chart.yDomain &&
Array.isArray(yAxisBounds) &&
yAxisBounds.length === 2
) {
const [customMin, customMax] = yAxisBounds;
const hasCustomMin = isDefined(customMin) && !Number.isNaN(customMin);
const hasCustomMax = isDefined(customMax) && !Number.isNaN(customMax);
if (
(hasCustomMin || hasCustomMax) &&
vizType === 'area' &&
chart.style() === 'expand'
) {
// Because there are custom bounds, we need to override them back to 0%-100% since this
// is an expanded area chart
chart.yDomain([0, 1]);
} else if (
(hasCustomMin || hasCustomMax) &&
vizType === 'area' &&
chart.style() === 'stream'
) {
// Because there are custom bounds, we need to override them back to the domain of the
// data since this is a stream area chart
chart.yDomain(computeStackedYDomain(data));
} else if (hasCustomMin && hasCustomMax) {
// Override the y domain if there's both a custom min and max
chart.yDomain([customMin, customMax]);
chart.clipEdge(true);
} else if (hasCustomMin || hasCustomMax) {
// Only one of the bounds has been set, so we need to manually calculate the other one
let [trueMin, trueMax] = [0, 1];
// These viz types can be stacked
// They correspond to the nvd3 stackedAreaChart and multiBarChart
if (
vizType === 'area' ||
(isVizTypes(['bar', 'dist_bar']) && chart.stacked())
) {
// This is a stacked area chart or a stacked bar chart
[trueMin, trueMax] = computeStackedYDomain(data);
} else {
[trueMin, trueMax] = computeYDomain(data);
}
const min = hasCustomMin ? customMin : trueMin;
const max = hasCustomMax ? customMax : trueMax;
chart.yDomain([min, max]);
chart.clipEdge(true);
}
}
};
applyYAxisBounds();
// Also reapply on each state change to account for enabled/disabled series
if (chart.dispatch && chart.dispatch.stateChange) {
chart.dispatch.on('stateChange.applyYAxisBounds', applyYAxisBounds);
}
if (showMarkers) {
svg
.selectAll('.nv-point')
.style('stroke-opacity', 1)
.style('fill-opacity', 1);
// redo on legend toggle; nvd3 calls the callback *before* the line is
// drawn, so we need to add a small delay here
chart.dispatch.on('stateChange.showMarkers', () => {
setTimeout(() => {
svg
.selectAll('.nv-point')
.style('stroke-opacity', 1)
.style('fill-opacity', 1);
}, 10);
});
}
if (chart.yAxis !== undefined || chart.yAxis2 !== undefined) {
// Hack to adjust y axis left margin to accommodate long numbers
const marginPad = Math.ceil(
Math.min(maxWidth * (isExplore ? 0.01 : 0.03), MAX_MARGIN_PAD),
);
// Hack to adjust margins to accommodate long axis tick labels.
// - has to be done only after the chart has been rendered once
// - measure the width or height of the labels
// ---- (x axis labels are rotated 45 degrees so we use height),
// - adjust margins based on these measures and render again
const margins = chart.margin();
if (chart.xAxis) {
margins.bottom = 28;
}
const maxYAxisLabelWidth = getMaxLabelSize(
svg,
chart.yAxis2 ? 'nv-y1' : 'nv-y',
);
const maxXAxisLabelHeight = getMaxLabelSize(svg, 'nv-x');
margins.left = maxYAxisLabelWidth + marginPad;
if (yAxisLabel && yAxisLabel !== '') {
margins.left += 25;
}
if (showBarValue) {
// Add more margin to avoid label colliding with legend.
margins.top += 24;
}
if (xAxisShowMinMax) {
// If x bounds are shown, we need a right margin
margins.right = Math.max(20, maxXAxisLabelHeight / 2) + marginPad;
}
if (xLabelRotation === 45) {
margins.bottom =
maxXAxisLabelHeight * Math.sin((Math.PI * xLabelRotation) / 180) +
marginPad +
30;
margins.right =
maxXAxisLabelHeight * Math.cos((Math.PI * xLabelRotation) / 180) +
marginPad;
} else if (staggerLabels) {
margins.bottom = 40;
}
if (bottomMargin && bottomMargin !== 'auto') {
margins.bottom = parseInt(bottomMargin, 10);
}
if (leftMargin && leftMargin !== 'auto') {
margins.left = leftMargin;
}
if (xAxisLabel && xAxisLabel !== '' && chart.xAxis) {
margins.bottom += 25;
let distance = 0;
if (margins.bottom && !Number.isNaN(margins.bottom)) {
distance = margins.bottom - 45;
}
// nvd3 bug axisLabelDistance is disregarded on xAxis
// https://github.com/krispo/angular-nvd3/issues/90
chart.xAxis.axisLabel(xAxisLabel).axisLabelDistance(distance);
}
if (yAxisLabel && yAxisLabel !== '' && chart.yAxis) {
let distance = 0;
if (margins.left && !Number.isNaN(margins.left)) {
distance = margins.left - 70;
}
chart.yAxis.axisLabel(yAxisLabel).axisLabelDistance(distance);
}
if (isTimeSeries && annotationData && activeAnnotationLayers.length > 0) {
// Time series annotations add additional data
const timeSeriesAnnotations = activeAnnotationLayers
.filter(
layer => layer.annotationType === ANNOTATION_TYPES.TIME_SERIES,
)
.reduce(
(bushel, a) =>
bushel.concat(
(annotationData[a.name] || []).map(series => {
if (!series) {
return {};
}
const key = Array.isArray(series.key)
? `${a.name}, ${series.key.join(', ')}`
: `${a.name}, ${series.key}`;
return {
...series,
key,
color: a.color,
strokeWidth: a.width,
classed: `${a.opacity} ${a.style} nv-timeseries-annotation-layer showMarkers${a.showMarkers} hideLine${a.hideLine}`,
};
}),
),
[],
);
data.push(...timeSeriesAnnotations);
}
// Uniquely identify tooltips based on chartId so this chart instance only
// controls its own tooltips
if (chartId) {
if (chart && chart.interactiveLayer && chart.interactiveLayer.tooltip) {
chart.interactiveLayer.tooltip.classes([
generateTooltipClassName(chartId),
]);
}
if (chart && chart.tooltip) {
chart.tooltip.classes([generateTooltipClassName(chartId)]);
}
}
// render chart
chart.margin(margins);
svg
.datum(data)
.transition()
.duration(500)
.attr('width', width)
.attr('height', height)
.call(chart);
// On scroll, hide (not remove) tooltips so they can reappear on hover.
// Throttle to only 4x/second.
window.addEventListener(
'scroll',
throttle(() => hideTooltips(false), 250),
);
// The below code should be run AFTER rendering because chart is updated in call()
if (isTimeSeries && activeAnnotationLayers.length > 0) {
// Formula annotations
const formulas = activeAnnotationLayers.filter(
a => a.annotationType === ANNOTATION_TYPES.FORMULA,
);
let xMax;
let xMin;
let xScale;
if (vizType === 'bar') {
xMin = d3.min(data[0].values, d => d.x);
xMax = d3.max(data[0].values, d => d.x);
xScale = d3.scale
.quantile()
.domain([xMin, xMax])
.range(chart.xAxis.range());
} else {
xMin = chart.xAxis.scale().domain()[0].valueOf();
xMax = chart.xAxis.scale().domain()[1].valueOf();
if (chart.xScale) {
xScale = chart.xScale();
} else if (chart.xAxis.scale) {
xScale = chart.xAxis.scale();
} else {
xScale = d3.scale.linear();
}
}
if (xScale && xScale.clamp) {
xScale.clamp(true);
}
if (formulas.length > 0) {
const xValues = [];
if (vizType === 'bar') {
// For bar-charts we want one data point evaluated for every
// data point that will be displayed.
const distinct = data.reduce((xVals, d) => {
d.values.forEach(x => xVals.add(x.x));
return xVals;
}, new Set());
xValues.push(...distinct.values());
xValues.sort();
} else {
// For every other time visualization it should be ok, to have a
// data points in even intervals.
let period = Math.min(
...data.map(d =>
Math.min(
...d.values.slice(1).map((v, i) => v.x - d.values[i].x),
),
),
);
const dataPoints = (xMax - xMin) / (period || 1);
// make sure that there are enough data points and not too many
period = dataPoints < 100 ? (xMax - xMin) / 100 : period;
period = dataPoints > 500 ? (xMax - xMin) / 500 : period;
xValues.push(xMin);
for (let x = xMin; x < xMax; x += period) {
xValues.push(x);
}
xValues.push(xMax);
}
const formulaData = formulas.map(fo => {
const { value: expression } = fo;
return {